题目

The reporter has written ________ articles about air pollution, hoping to call the attention of all people to the problem. A．a series of  B．a great deal of C．a plenty of  D．a large amount of 答案：A　a series of 一连串的。a great deal of与a large amount of意为“大量的”，均修饰不可数名词；C项本身有误，应为plenty of。

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